Probably the Mr Robot thing. I mostly use Firefox (and recommend it), but they do appear to be run by MBAs or marketers— not sure which.
That was such a strange choice by Mozilla, I mean the plug-in was specifically for people who play the Mr Robot game. Even after Mozilla force-pushed it to their entire user base players still had to manually enable it to play. If the whole damn thing required manual intervention anyway why didn’t they just put it in the addon store to start with?!
It wasn't always like that. I think it changed 2 or 3 years ago.
Love the Mr Robot addon.
consider going librewolf instead, if your concern is security. I personally use librewolf for most things and brave for the few things that don't work well on firefox in linux (i.e. playing video from my nvr, my realtor website's 3d floor plan walkout, etc). Floccus and bitwarden keep bookmarks and passwords synced between the two so I barely notice which one I am using.